本规范涵盖交流（AC）和直流（DC）电机控制器、接触器（见6.8.6）和相关开关设备（见6.8.3）。包括磁性控制器、控制器零件（见6.8.52）、限位开关（见6.8.90）、压力开关（见6.8.92）、温度开关（见6.8.95）、选择器开关（见6.8.94）、按钮（见6.8.57）和用于控制电动机的类似装置（见6.8.19）。包括用作磁性控制器部件的半导体（固态）器件。

This specification covers alternating current (AC) and direct current (DC) motor controllers, contactors (see 6.8.6), and associated switching devices (see 6.8.3). Included are magnetic controllers, controller parts (see 6.8.52), limit switches (see 6.8.90), pressure switches (see 6.8.92), temperature switches (see 6.8.95), selector switches (see 6.8.94), push-buttons (see 6.8.57), and similar devices used for control of electric motors (see 6.8.19). Semiconductor (solid-state) devices used as parts for magnetic controllers are included.